package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author codingBee
 * @since 2021/5/11/19:38
 */
@Service
public class PaymentService {
    public String paymentInfo_OK(String id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_OK,id：" + id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
    })
    public String paymentInfo_TimeOut(String id) {
        int timeNumber = 5;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_TimeOut,id：" + id + "耗时" + timeNumber + "秒";
    }

    public String paymentInfo_TimeOutHandler(String id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_TimeOutHandler,id：" + id + "备选方案";
    }

    /// 服务熔断
    @HystrixCommand(
            fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),//请求次数峰值
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//在requestVolumeThreshold中失败率达到errorThresholdPercentage后跳闸

    }
    )
    public String paymentCircuitBreaker(Integer id) {
        if (id < 0) {
            throw new RuntimeException("*******id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(Integer id) {
        return "id 不能为负数，请稍后重试；id" + id;
    }
}
